LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zggev3_work()

lapack_int LAPACKE_zggev3_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double alpha,
lapack_complex_double beta,
lapack_complex_double vl,
lapack_int  ldvl,
lapack_complex_double vr,
lapack_int  ldvr,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 35 of file lapacke_zggev3_work.c.

45{
46 lapack_int info = 0;
47 if( matrix_layout == LAPACK_COL_MAJOR ) {
48 /* Call LAPACK function and adjust info */
49 LAPACK_zggev3( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alpha, beta, vl,
50 &ldvl, vr, &ldvr, work, &lwork, rwork, &info );
51 if( info < 0 ) {
52 info = info - 1;
53 }
54 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55 lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
56 lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
57 lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
58 lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
59 lapack_int lda_t = MAX(1,n);
60 lapack_int ldb_t = MAX(1,n);
61 lapack_int ldvl_t = MAX(1,nrows_vl);
62 lapack_int ldvr_t = MAX(1,nrows_vr);
63 lapack_complex_double* a_t = NULL;
64 lapack_complex_double* b_t = NULL;
65 lapack_complex_double* vl_t = NULL;
66 lapack_complex_double* vr_t = NULL;
67 /* Check leading dimension(s) */
68 if( lda < n ) {
69 info = -6;
70 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
71 return info;
72 }
73 if( ldb < n ) {
74 info = -8;
75 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
76 return info;
77 }
78 if( ldvl < ncols_vl ) {
79 info = -12;
80 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
81 return info;
82 }
83 if( ldvr < ncols_vr ) {
84 info = -14;
85 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
86 return info;
87 }
88 /* Query optimal working array(s) size if requested */
89 if( lwork == -1 ) {
90 LAPACK_zggev3( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t,
91 alpha, beta, vl, &ldvl_t, vr, &ldvr_t,
92 work, &lwork, rwork, &info );
93 return (info < 0) ? (info - 1) : info;
94 }
95 /* Allocate memory for temporary array(s) */
97 LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
98 if( a_t == NULL ) {
100 goto exit_level_0;
101 }
102 b_t = (lapack_complex_double*)
103 LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
104 if( b_t == NULL ) {
106 goto exit_level_1;
107 }
108 if( LAPACKE_lsame( jobvl, 'v' ) ) {
109 vl_t = (lapack_complex_double*)
111 ldvl_t * MAX(1,ncols_vl) );
112 if( vl_t == NULL ) {
114 goto exit_level_2;
115 }
116 }
117 if( LAPACKE_lsame( jobvr, 'v' ) ) {
118 vr_t = (lapack_complex_double*)
120 ldvr_t * MAX(1,ncols_vr) );
121 if( vr_t == NULL ) {
123 goto exit_level_3;
124 }
125 }
126 /* Transpose input matrices */
127 LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
128 LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
129 /* Call LAPACK function and adjust info */
130 LAPACK_zggev3( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t,
131 alpha, beta, vl_t, &ldvl_t, vr_t, &ldvr_t,
132 work, &lwork, rwork, &info );
133 if( info < 0 ) {
134 info = info - 1;
135 }
136 /* Transpose output matrices */
137 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
138 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
139 if( LAPACKE_lsame( jobvl, 'v' ) ) {
140 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
141 ldvl_t, vl, ldvl );
142 }
143 if( LAPACKE_lsame( jobvr, 'v' ) ) {
144 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
145 ldvr_t, vr, ldvr );
146 }
147 /* Release memory and exit */
148 if( LAPACKE_lsame( jobvr, 'v' ) ) {
149 LAPACKE_free( vr_t );
150 }
151exit_level_3:
152 if( LAPACKE_lsame( jobvl, 'v' ) ) {
153 LAPACKE_free( vl_t );
154 }
155exit_level_2:
156 LAPACKE_free( b_t );
157exit_level_1:
158 LAPACKE_free( a_t );
159exit_level_0:
160 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
161 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
162 }
163 } else {
164 info = -1;
165 LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
166 }
167 return info;
168}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_double
Definition: lapack.h:64
#define LAPACK_zggev3(...)
Definition: lapack.h:4837
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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